An older Chicago Cubs fan appeared to slap a younger spectator on the back of the head after he remained seated during the national anthem at Wrigley Field in footage that has been viewed millions of times on social media. The video shows the older man, dressed in Cubs gear, leaning toward the seated spectator and seemingly ordering him to stand for "The Star-Spangled Banner." Cubs Cruise Past Twins at Wrigley FieldThe apparent confrontation occurred before the Cubs dominated the Twins in a 10-1 victory on Sunday. Why Standing for the Anthem Remains Politically ChargedStanding for the national anthem is a customary display of respect in the United States, but federal law describes it as recommended conduct rather than a compulsory act. It is unclear from the viral video why the younger spectator remained seated.